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The Differences Between Cycling ERG Mode and SIM Mode — Official Instructions | Zwift

The Differences Between Cycling ERG Mode and SIM Mode — Official Instructions | Zwift


– Hey. I’m Kate. Today I’m going to talk
about the difference between ERG and Sim mode. If you have smart trainer, knowing when to use each mode will make training more
effective and more fun. Smart trainers have multiple modes. These modes effect how resistance
is applied while you ride. The most common ones are ERG and Sim. ERG is great for workouts because it applies specific resistance. Whether your going up hill,
down hill or rolling along. The resistance is consistent. That’s why ERG is the
default for workout mode. Sim, short for simulation is
phenomenal for free rides. Rides when your just cruising around. Because the resistance
mimics the road your on, going up means more resistance, going down that translates to less and flat is going to keep it consistent. Now that you have the basics,
lets do a deeper dive. Intervals and workouts are for ERG mode. Lets say if your Zwift workout includes a 10 minute
interval at 250 watts. Your gonna want be in ERG mode and your gonna want start
at your desired cadence because the smart trainer
will adjust your resistance based on your cadence. No matter how fast those pedals are going, ERG holds you at that target wattage. Resistance changes based on your relation to that target wattage. If your going above your target wattage the resistance will decrease. Not hitting your target wattage, resistance is going to increase. For example, if you start at 90 RPM and then drop it down to 60, the trainer will increase resistance due to your slow pedal stroke. If you start at 80 RPM
and then increase to 100, the resistance will decrease
due to your higher cadence. What’s the takeaway? When your in ERG mode your
only job is to manage cadence. You don’t even have to
shift if you don’t want to. Some people in ERG mode even
use cogs they don’t often use just to squeak a few more
miles out of that cassette. Want to switch between ERG and Sim? Zwift does this automatically. Sign up for a workout
and ERG is the default. Now your ready to ride. Go ahead play with Sim and ERG modes. No matter what mode you ride, have fun. I’ll see ya in Watopia.

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